Fix namespaces.

code/AssetLib/ASE/ASELoader.cpp

@@ -63,7 +63,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 // utilities
 #include <assimp/fast_atof.h>
 
-using namespace Assimp;
+namespace Assimp {
 using namespace Assimp::ASE;
 
 static constexpr aiImporterDesc desc = {
@@ -1262,6 +1262,8 @@ bool ASEImporter::GenerateNormals(ASE::Mesh &mesh) {
     return false;
 }
 
+}
+
 #endif // ASSIMP_BUILD_NO_3DS_IMPORTER
 
 #endif // !! ASSIMP_BUILD_NO_BASE_IMPORTER